package com.datatraffic.databasecontrol;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import com.google.android.gms.internal.db;

import android.annotation.SuppressLint;
import android.content.Context;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.util.Log;
import android.database.sqlite.SQLiteOpenHelper;

public class DBHelper extends SQLiteOpenHelper {

	private static final int DATABASE_VERSION = 1;

	private final Context myContext;
	private static final String DATABASE_NAME = "SalesUpDB";
	@SuppressLint("SdCardPath")
	private static String DB_PATH = "/data/data/com.datatraffic.salesup/databases/";// Context.getFilesDir().getPath()
	private SQLiteDatabase baseDatos;
	private static int state = -1;
	private static final String DATABASE_TABLE = "Forms";

	public DBHelper(Context context) {
		super(context, DATABASE_NAME, null, DATABASE_VERSION);
		this.myContext = context;
		try {
			createDataBase();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * Creates a empty database on the system and rewrites it with your own
	 * database.
	 * */
	public void createDataBase() throws IOException {
		SQLiteDatabase db_Read = null;
		if (checkDataBase())
			state = 0;
		else {
			// By calling this method and empty database will be created into
			// the default system path
			// of your application so we are gonna be able to overwrite that
			// database with our database.
			db_Read = this.getReadableDatabase();// (DATABASE_NAME);
			db_Read.close();
			try {
				copyDataBase();
				Log.d("DATABASE CREATED", "SUCCESSFULLY!");
				state = 0;
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}

	/**
	 * Check if the database already exist to avoid re-copying the file each
	 * time you open the application.
	 * 
	 * @return true if it exists, false if it doesn't
	 */
	private boolean checkDataBase() {
		SQLiteDatabase checkDB = null;
		try {
			String myPath = DB_PATH + DATABASE_NAME;
			checkDB = SQLiteDatabase.openDatabase(myPath, null,
					SQLiteDatabase.OPEN_READONLY);
		} catch (SQLiteException e) {// database does't exist yet.
		}
		if (checkDB != null)
			checkDB.close();
		return checkDB != null ? true : false;
	}

	/**
	 * Copies your database from your local assets-folder to the just created
	 * empty database in the system folder, from where it can be accessed and
	 * handled. This is done by transfering bytestream.
	 * */
	private void copyDataBase() throws IOException {
		// Open your local db as the input stream
		InputStream myInput = myContext.getAssets().open(DATABASE_NAME);
		// Path to the just created empty db
		String outFileName = DB_PATH + DATABASE_NAME;
		// Open the empty db as the output stream
		OutputStream myOutput = new FileOutputStream(outFileName);
		// transfer bytes from the inputfile to the outputfile
		byte[] buffer = new byte[1024];
		int length;
		while ((length = myInput.read(buffer)) > 0)
			myOutput.write(buffer, 0, length);
		// Close the streams
		myOutput.flush();
		myOutput.close();
		myInput.close();
	}

	public void openDataBase() throws SQLException {
		// Open the database
		this.close();
		String myPath = DB_PATH + DATABASE_NAME;
		baseDatos = SQLiteDatabase.openDatabase(myPath, null,
				SQLiteDatabase.OPEN_READWRITE);
	}

	@Override
	public synchronized void close() {
		if (baseDatos != null)
			baseDatos.close();
		super.close();
	}

	@Override
	public void onCreate(SQLiteDatabase database) {
	}

	@Override
	public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
		db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLE);
		onCreate(db);
	}

	public SQLiteDatabase getBaseDatos() {
		return baseDatos;
	}

	public void setBaseDatos(SQLiteDatabase baseDatos) {
		this.baseDatos = baseDatos;
	}

	public static int getState() {
		return state;
	}
	
	public String  Eliminar() {
		SQLiteDatabase db = this.getReadableDatabase();
		 try {
		    	db.delete(DATABASE_TABLE, null, null);
		    	// db.execSQL(DELETEQuery);
		    	 return "ok";
			} catch (Exception e) {
				// TODO: handle exception
				return e.getMessage();
			}
	}

	public static void setState(int state) {
		DBHelper.state = state;
	}
}